F4 Discovery: - Unconditionally use the System Bootloader - Use PC2/4/5/6 Pins for JTAG/SWD to avoid collision with eventual STLink Uart connection - Indicate Bootloader with blue LED
This commit is contained in:
Uwe Bonnes
Gareth McMullin
parent
6659d87e9b
commit
ad151fdca8
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@ -7,12 +7,11 @@ CFLAGS += -Istm32/include -mcpu=cortex-m4 -mthumb \
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-DSTM32F4 -DF4DISCOVERY -I../libopencm3/include \
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-Iplatforms/stm32
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LDFLAGS_BOOT := $(LDFLAGS) -lopencm3_stm32f4 -Wl,--defsym,_stack=0x20020000 \
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LDFLAGS = -lopencm3_stm32f4 -Wl,--defsym,_stack=0x20020000 \
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-Wl,-T,platforms/stm32/f4discovery.ld -nostartfiles -lc -lnosys \
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-Wl,-Map=mapfile -mthumb -mcpu=cortex-m4 -Wl,-gc-sections \
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-mfloat-abi=hard -mfpu=fpv4-sp-d16 \
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-L../libopencm3/lib
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LDFLAGS = $(LDFLAGS_BOOT) -Wl,-Ttext=0x8010000
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VPATH += platforms/stm32
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@ -21,19 +20,10 @@ SRC += cdcacm.c \
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traceswo.c \
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usbuart.c \
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all: blackmagic.bin blackmagic_dfu.bin blackmagic_dfu.hex
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all: blackmagic.bin
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blackmagic.bin: blackmagic
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$(OBJCOPY) -O binary $^ $@
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blackmagic_dfu: usbdfu.o dfucore.o dfu_f4.o
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$(CC) $^ -o $@ $(LDFLAGS_BOOT)
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blackmagic_dfu.bin: blackmagic_dfu
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$(OBJCOPY) -O binary $^ $@
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blackmagic_dfu.hex: blackmagic_dfu
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$(OBJCOPY) -O ihex $^ $@
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host_clean:
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-rm blackmagic.bin blackmagic_dfu blackmagic_dfu.bin blackmagic_dfu.hex
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-rm blackmagic.bin
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@ -1,17 +1,28 @@
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Application start address:
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=========================
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System vs BMP Bootloader
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========================
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For the BMP bootloader, flashing qas not reliable. So we use the system
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bootloder unconditional.
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Use 0x8010000
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- lower 3 16 k pages may be used for parameter storage
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- Erasing a single 64 k Page is faster then erasing 2 16 k Pages
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eventual the 64 k page
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Internal boot loader:
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Connections:
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====================
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When we request invokation of a bootloader from inside the application,
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we boot the device internal bootloader with the blue botton pressed.
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PA0: User button to force system bootloader entry with reset
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PA2/PA3 eventual connected to the STLINK/ STM32F103C8
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That way, we can easy exchange the custom bootloader via the device
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internale bootloader
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PC2: TDI
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PC4: TMS/SWDIO
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PC5: TCK/SWCLK
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PC6: TDO/TRACESWO
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PC1: TRST
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PC8: SRST
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Blue Led: Indicator that system bootloader is entered via BMP
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Bootstrapping the F4Discovery on-board ST-Link
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==============================================
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http://embdev.net/articles/STM_Discovery_as_Black_Magic_Probe has some hints
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how to modify the F4Discovery on-board ST-Link. If you try to do so and hit
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a problem that stands some test like that you load the right firmware to the
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right device via the right BMP probe, explain, report and ask on the
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blackmagic mailing list http://sourceforge.net/mail/?group_id=407419.
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@ -46,23 +46,28 @@ static void morse_update(void);
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int platform_init(void)
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{
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/* Check the USER button*/
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rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
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if(gpio_get(GPIOA, GPIO0)) {
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assert_boot_pin();
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scb_reset_core();
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}
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rcc_clock_setup_hse_3v3(&hse_8mhz_3v3[CLOCK_3V3_168MHZ]);
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/* Enable peripherals */
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rcc_peripheral_enable_clock(&RCC_AHB2ENR, RCC_AHB2ENR_OTGFSEN);
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rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
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rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPBEN);
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rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPCEN);
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rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPDEN);
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rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_CRCEN);
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/* Set up USB Pins and alternate function*/
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gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE,
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GPIO9 | GPIO11 | GPIO12);
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gpio_set_af(GPIOA, GPIO_AF10, GPIO9 | GPIO11 | GPIO12);
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GPIOA_OSPEEDR &=~0xfc;
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GPIOA_OSPEEDR |= 0xa8;
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GPIOC_OSPEEDR &=~0xF30;
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GPIOC_OSPEEDR |= 0xA20;
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gpio_mode_setup(JTAG_PORT, GPIO_MODE_OUTPUT,
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GPIO_PUPD_NONE,
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TMS_PIN | TCK_PIN | TDI_PIN);
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@ -73,7 +78,7 @@ int platform_init(void)
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gpio_mode_setup(LED_PORT, GPIO_MODE_OUTPUT,
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GPIO_PUPD_NONE,
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LED_UART | LED_IDLE_RUN | LED_ERROR | LED_SPARE1);
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LED_UART | LED_IDLE_RUN | LED_ERROR | LED_BOOTLOADER);
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/* Setup heartbeat timer */
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systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
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@ -85,8 +90,6 @@ int platform_init(void)
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usbuart_init();
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SCB_VTOR = 0x10000; // Relocate interrupt vector table here
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cdcacm_init();
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jtag_scan(NULL);
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@ -194,16 +197,14 @@ const char *platform_target_voltage(void)
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void assert_boot_pin(void)
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{
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if (gpio_get(GPIOA, GPIO0)) {
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/* Jump to the built in bootloader by mapping System flash */
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rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_SYSCFGEN);
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SYSCFG_MEMRM &= ~3;
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SYSCFG_MEMRM |= 1;
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}
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else {
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/* Flag Bootloader Request by mimicing a pushed USER button*/
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gpio_mode_setup(GPIOA, GPIO_MODE_OUTPUT,
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GPIO_PUPD_NONE, GPIO0);
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gpio_set(GPIOA, GPIO0);
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}
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/* Assert blue LED as indicator we are in the bootloader */
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rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPDEN);
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gpio_mode_setup(LED_PORT, GPIO_MODE_OUTPUT,
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GPIO_PUPD_NONE, LED_BOOTLOADER);
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gpio_set(LED_PORT, LED_BOOTLOADER);
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/* Jump to the built in bootloader by mapping System flash */
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rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_SYSCFGEN);
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SYSCFG_MEMRM &= ~3;
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SYSCFG_MEMRM |= 1;
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}
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@ -49,15 +49,16 @@ extern usbd_device *usbdev;
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* LED0 = PD12 (Green LED : Running)
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* LED1 = PD13 (Orange LED : Idle)
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* LED2 = PD12 (Red LED : Error)
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* LED3 = PD15 (Blue LED : Bootloader active)
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*
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* TPWR = XXX (input) -- analogue on mini design ADC1, ch8
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* nTRST = PD0
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* SRST_OUT = PD1
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* TDI = PA1
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* TMS = PA3 (input for SWDP)
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* TCK = PA8
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* TDO = PB4 (input)
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* nSRST = PD2 (input)
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* nTRST = PC1
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* SRST_OUT = PC8
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* TDI = PC2
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* TMS = PC4 (input for SWDP)
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* TCK = PC5/SWCLK
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* TDO = PC6 (input for TRACESWO
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* nSRST =
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*
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* USB cable pull-up: PA8
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* USB VBUS detect: PB13 -- New on mini design.
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@ -66,32 +67,32 @@ extern usbd_device *usbdev;
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*/
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/* Hardware definitions... */
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#define JTAG_PORT GPIOA
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#define JTAG_PORT GPIOC
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#define TDI_PORT JTAG_PORT
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#define TMS_PORT JTAG_PORT
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#define TCK_PORT JTAG_PORT
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#define TDO_PORT GPIOB
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#define TDI_PIN GPIO1
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#define TMS_PIN GPIO3
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#define TCK_PIN GPIO2
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#define TDO_PIN GPIO4
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#define TDO_PORT GPIOC
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#define TDI_PIN GPIO2
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#define TMS_PIN GPIO4
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#define TCK_PIN GPIO5
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#define TDO_PIN GPIO6
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#define SWDIO_PORT JTAG_PORT
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#define SWCLK_PORT JTAG_PORT
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#define SWDIO_PIN TMS_PIN
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#define SWCLK_PIN TCK_PIN
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#define TRST_PORT GPIOD
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#define TRST_PIN GPIO0
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#define SRST_PORT GPIOD
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#define SRST_PIN GPIO1
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#define TRST_PORT GPIOC
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#define TRST_PIN GPIO1
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#define SRST_PORT GPIOC
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#define SRST_PIN GPIO8
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#define LED_PORT GPIOD
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#define LED_PORT_UART GPIOD
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#define LED_UART GPIO12
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#define LED_IDLE_RUN GPIO13
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#define LED_ERROR GPIO14
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#define LED_SPARE1 GPIO15
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#define LED_BOOTLOADER GPIO15
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#define TMS_SET_MODE() gpio_mode_setup(TMS_PORT, GPIO_MODE_OUTPUT, \
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GPIO_PUPD_NONE, TMS_PIN);
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